How can I compress an image to a specific KB size?

Switch to Target Size mode and enter the size you want in KB. The tool automatically searches for the highest quality that fits under your target and compresses each image to match.

Does compressing reduce image quality?

JPG and WebP use lossy compression, so lowering quality reduces file size with some visible loss. At 80 to 92 percent quality the difference is usually invisible while files get much smaller. PNG stays lossless.

Can I compress many images at once?

Yes. Drag in as many images as you like and they are all compressed in a batch. You can download them individually or all at once.

Which format gives the smallest file?

WebP typically produces the smallest files at the same visual quality, often 25 to 35 percent smaller than JPG. Choose Keep Original to preserve the format, or convert to WebP for maximum savings.

Image Compressor — Free, Batch, No Upload (JPG, PNG, WebP)

Compress JPG, PNG, and WebP images to a smaller file size — right in your browser. Batch support, a quality slider, and a target-size mode to hit an exact KB limit. No upload, no watermark, no signup.

Why compress images?

Large image files slow down websites, eat storage, and fail upload limits on forms, email, and marketplaces. Compressing shrinks the file size — often by 60–80% — while keeping the picture looking essentially the same. This tool does it entirely in your browser, so your images are never uploaded anywhere.

Quality mode vs Target Size mode

Quality mode: You pick a quality level (e.g. 80%) and the tool compresses to it. Great for a consistent look across a batch.
Target Size mode: You enter a KB limit (e.g. "under 200 KB") and the tool automatically finds the highest quality that fits. Perfect for upload limits on job portals, government forms, and marketplaces.

Which format should I use?

Keep Original: Compress without changing the format.
JPG: Best all-round for photos — small and universally supported.
WebP: Smallest files at the same quality (usually 25–35% smaller than JPG). Supported by all modern browsers.
PNG: Lossless — best for graphics and screenshots, but larger.

Frequently Asked Questions

Are my images uploaded to a server?
No. Everything runs in your browser via the HTML canvas. Your images never leave your device.

How do I compress to an exact KB size?
Switch to Target Size mode and enter your KB limit. The tool auto-tunes quality to fit under it.

Will it reduce quality?
JPG/WebP are lossy, so lower quality means smaller files. At 80–92% the loss is usually invisible. PNG stays lossless.

Can I compress many at once?
Yes — drop in a whole batch and download them individually or all at once.